o2 
A third shipment of the Chinese lady beetles (Chilocorus similis 
Rossi) was obtained last June through the kindness of Prof. Wilmon 
Newell, State entomologist of Georgia, and established in a badly 
infested orchard at Kinderhook, Columbia County. Untortunately 
we were unable to find larve or signs of breeding, as had been the 
case with earher shipinents in the years 1902-3, and it is possible that 
most of the insects availed themselves of their freedom and spread to 
other trees. It 1s sincerely hoped that some have found conditions 
to their hking, where they have bred freely, and that the species will 
become established in that section and prove of considerable service 
in controlling the San Jose scale. 
It will be well, in this connection, to allude to some recent work 
done in continuation of the investigations begun in 1902 upon the 
grapevine rootworm (Fidia viticida Walsh). This insect was not 
nearly so abundant in the Chautauqua grape region during the season 
of 1904 as it was the preceding year, and it was somewhat difficult 
to obtain suitable conditions for experimental work. A badly 
infested area was most thoroughly sprayed June 30, and a second 
time, July 6, with arsenate of lead at the rate of + pounds to 50 
gallons of water. The treated section was the subject of close observa- 
tion, and repeated collections with a hand catcher were made for the } 
purpose of determining the number of beetles present upon the vines. | 
Collections July 11 resulted in taking from 5 to 39 from single vines, | 
on the 14th from 15 to 46, and on the 20th from 5 to 19. Similar 
collections on an adjacent untreated area gave on the 1!th from | 
18 to 77, on the 14th from 34 to 60, and on the 20th from 9 to 14 | 
beetles per vine. It will be seen that there were more beetles upon | 
the unsprayed than upon the poisoned vines, but there was not a very | 
marked difference, and nearly the same proportions held later in the }: 
case of egg clusters and also for grubs. We are inclined to believe | 
that the spraying reduced the numbers of the pest about 50 per cent. | 
Supplementary indoor experiments showed that many of the beetles j 
taken from the sprayed vines and fed foliage from the same appeared | 
to die as much .from starvation as from poisoning. The resistance of | 
this creature to arsenical poisons is somewhat remarkable. There is | 
no doubt that spraying is of some service in keeping the pest in check, | 
though it is not so effective as one could wish. 
SOME ECONOMIC INSECTS FOR THE YEAR 1904 IN OHIO. 
By A. F. Burgess, Columbis, Ohio. 
: H 
e e ° ‘ . e 7¢ e = { 
The colony of Asiatic ladybirds (Chilocorus similis Rossi), which |. 
was started in an orchard infested with San Jose scale in southern 
K 
